AMINE-ALDEHYDE RESINS AND USES THEREOF IN SEPARATION PROCESSES

摘要

Amine-aldehyde resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These resins are especially useful as froth flotation depressants, for example in the beneficiation of value materials (e.g., bitumen, coal, or kaolin clay) to remove impurities such as sand. The resins are also useful for treating aqueous liquid suspensions to remove solid particulates, as well as for removing metallic ions in the purification of water.

主权项

1. A method for beneficiation of an ore, comprising:
adding a urea-formaldehyde resin to an aqueous slurry comprising an ore to produce a mixture, wherein the urea-formaldehyde resin has a number average molecular weight of about 400 to about 4,000, and wherein the mixture comprises about 400 grams to about 1,000 grams of the urea-formaldehyde resin per metric ton of the ore; forcing air through the mixture to form a hydrophilic fraction in the mixture; and separating a product comprising a mineral or metal from the hydrophilic fraction.